"PASSPORT FORGERY (part 3)

Circuit Diagram of RFID based Attendance System
Microcontroller
AT89C52 Microcontroller from 8051 family is used in this system. It consists of four ports and 40 pins.
Oscillator Circuit
Oscillator circuit is connected between the 18 and 19 th pin of the microcontroller and consist of an oscillator with a frequency of 11.0592 MHz and two capacitors of 33pF.
Preset Circuit
The 9th pin of the microcontroller is RST pin, which is reset pin. This preset circuit comprises a switch, a capacitor of (10u) and a resistor of 10k. When the switch is pressed, the RST pin is connected to the power supply(Vcc) and the microcontroller gets reset
LCD Display
The LCD display is used for displaying the data. It consists of 16 pins: three pins are connected to the power supply, and the remaining pins are connected to the port 2 of the microcontroller.
RFID Reader
The RFID reader is a module with RFID reader and antenna. It is small in size and integrates with any sort of hardware design. It is used to read the data stored in the RFID tags.
Circuit Working
The data stored in this tag is referred to as the identification and attendance of the person. Once the student places the card in front of the RFID reader, it reads the data and compares the data stored in the microcontroller which is programmed by using Embedded C language. If the data matches, then it displays the information on the LCD. This RFID attendance system also makes use of the status button for retrieving the status of students’ attendance, which is interfaced to the microcontroller. By using this advanced concept, a lot of time can be saved as all the students’ attendance information is directly stored in the database." (these are features from attendance RFID's but also passports)

https://www.elprocus.com/rfid-based-attendance-management-system/